Bug Description

This is a tracking bug for a dependency of the maas MIR (bug #961344).

For 12.04, bind all services not required by the nodes to the loopback interface (like with postgresql). This includes mass-pserv, maas-txlongpoll, epmd, and rabbitmq and anything else that is added between now and release. If this cannot be done, add explict firewall rules (I suggest in a 'maas' chain to make this play nice with other rulesets) for these open ports.

The branch I attached makes pserv listen only to 127.0.0.1. THIS DOES NOT FIX TXLONGPOLL. That would take upstream changes to make the interface binding configurable. So we'll still need to firewall off the txlongpoll port.